TRENTON – A state board has revoked the certificates of a former teacher at a Camden charter school and two Cumberland County educators. The State Board of Examiners at its April 1 meeting ordered the surrender of a certificate held by David Broach, who taught at Freedom Prep in Camden. It took similar action against Dawn Norcross and Davina M. Levari, who lost their certificates due to prosecutions by the Cumberland County Prosector’s Office. None of the teachers responded to multiple requests to object to the seizure of their certificates, said the board. It cited all three for engaging in unbecoming conduct.